Westlake Chemical Partners LP Announces Second Quarter 2023 Results

• Declared quarterly distribution of $0.4714 per unit; 36^th consecutive quarterly distribution

Westlake Chemical Partners LP (NYSE:WLKP) (the "Partnership") today reported net income attributable to the Partnership in the second quarter of 2023 of $11.9 million, or $0.34 per limited partner unit, a decrease of $4.5 million compared to second quarter 2022 net income of $16.4 million. The reduction in Partnership net income in the second quarter of 2023 compared to the second quarter of 2022 was the result of lower production volumes, due to the planned Calvert City maintenance turnaround, and higher interest expense. Cash flows from operating activities in the second quarter of 2023 were $98.5 million, a decrease of $22.4 million compared to second quarter 2022 cash flows from operating activities of $120.9 million. The decrease was primarily due to lower net income at OpCo. For the three months ended June 30, 2023, MLP distributable cash flow was $15.0 million, a decrease of $4.6 million compared to second quarter 2022 MLP distributable cash flow. The decrease in MLP distributable cash flow was primarily attributable to impacts from the Calvert City turnaround and higher interest expense.

Second quarter 2023 net income attributable to the Partnership of $11.9 million decreased by $3.0 million compared to first quarter 2023 net income of $14.9 million due to impacts from the Calvert City turnaround. Second quarter 2023 cash flows from operating activities of $98.5 million decreased by $46.4 million compared to first quarter 2023 cash flows from operating activities of $144.9 million due to lower net income at OpCo and cash costs associated with the Calvert City turnaround. Second quarter 2023 MLP distributable cash flow of $15.0 million decreased by $2.6 million compared to first quarter 2023 MLP distributable cash flow of $17.6 million, primarily due to lower net income at OpCo.

"As expected, the Partnership's net income and distributable cash flow in the second quarter of 2023 were below both the prior year and prior quarter levels due to the planned maintenance turnaround at Calvert City, which only occurs roughly every seven years. While costs to perform the maintenance were fully paid for by reserves from our ethylene sales agreement with Westlake, the reduced production volume at Calvert City for the duration of the turnaround negatively impacted our sales volume, net income and distributable cash flow," said Albert Chao, President and Chief Executive Officer. "Due to the strong efforts of OpCo's employees, the Calvert City turnaround was completed on schedule during the second quarter. Looking forward, we expect distributable cash flow to improve in the second half of 2023 from second quarter levels now that our maintenance work is behind us. We remain excited about the strong underlying fundamentals of the Partnership and the stability provided to our financial results by our ethylene sales agreement that provides a fixed margin on 95% of our production."

On August 1, 2023, the Partnership announced that the Board of Directors of Westlake Chemical Partners GP LLC had approved a quarterly distribution for the second quarter of 2023 of $0.4714 per unit to be payable on August 25, 2023 to unitholders of record as of August 11, 2023, representing the 36th consecutive quarterly distribution to our unitholders. MLP distributable cash flow provided trailing twelve-month coverage of 1.05x the declared distributions for the second quarter of 2023.

OpCo's Ethylene Sales Agreement with Westlake is designed to provide for stable and predictable cash flows. The agreement provides that 95% of OpCo's ethylene production is sold to Westlake for a cash margin of $0.10 per pound, net of operating costs, maintenance capital expenditures and reserves for future turnaround expenditures.

The statements in this release and the related teleconference relating to matters that are not historical facts, such as those with respect to the ability to deliver value, returns, predictable cash flows and distributions to unitholders, demand for ethylene and expected margins and production volumes, contracted volumes, the expectation that strong distributions will continue, and the nature of the sales agreement with Westlake, are forward-looking statements. These forward-looking statements are subject to significant risks and uncertainties. Actual results could differ materially, based on factors including, but not limited to, the COVID-19 pandemic and the response thereto; operating difficulties; the volume of ethylene that we are able to sell; the price at which we are able to sell ethylene; changes in the price and availability of feedstocks; changes in prevailing economic conditions, including inflation, interest rates and possible recession; actions and commitments of Westlake Corporation; actions of third parties; inclement or hazardous weather conditions, including flooding, and the physical impacts of climate change; environmental hazards; changes in laws and regulations (or the interpretation thereof); inability to acquire or maintain necessary permits; inability to obtain necessary production equipment or replacement parts; technical difficulties or failures; labor disputes; difficulty collecting receivables; inability of our customers to take delivery; fires, explosions or other industrial accidents; our ability to borrow funds and access capital markets; and other risk factors. For more detailed information about the factors that could cause actual results to differ materially, please refer to the Partnership's Annual Report on Form 10-K for the year ended December 31, 2022, which was filed with the SEC in March 2023, and Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, which was filed with the SEC in May 2023.

This release is intended to be a qualified notice under Treasury Regulation Section 1.1446-4(b). Brokers and nominees should treat one hundred percent (100.0%) of the Partnership's distributions to non-U.S. investors as being attributable to income that is effectively connected with a United States trade or business. Accordingly, the Partnership's distributions to non-U.S. investors are subject to federal income tax withholding at the highest applicable effective tax rate.

Use of Non-GAAP Financial Measures

This release makes reference to certain "non-GAAP" financial measures, such as MLP distributable cash flow and EBITDA. For this purpose, a non-GAAP financial measure is generally defined by the Securities and Exchange Commission ("SEC") as a numerical measure of a registrant's historical or future financial performance, financial position or cash flows that (1) excludes amounts, or is subject to adjustments that have the effect of excluding amounts, that are included in the most directly comparable measure calculated and presented in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") in the statement of income, balance sheet or statement of cash flows (or equivalent statements) of the registrant; or (2) includes amounts, or is subject to adjustments that have the effect of including amounts, that are excluded from the most directly comparable measure so calculated and presented. We report our financial results in accordance with U.S. GAAP, but believe that certain non-GAAP financial measures, such as MLP distributable cash flow and EBITDA, provide useful supplemental information to investors regarding the underlying business trends and performance of our ongoing operations and are useful for period-over-period comparisons of such operations. These non-GAAP financial measures should be considered as a supplement to, and not as a substitute for, or superior to, the financial measures prepared in accordance with U.S. GAAP. We define MLP distributable cash flow as distributable cash flow less distributable cash flow attributable to Westlake Corporation's noncontrolling interest in OpCo and distributions attributable to the incentive distribution rights holder. MLP distributable cash flow does not reflect changes in working capital balances. We define EBITDA as net income before interest expense, income taxes, depreciation and amortization. MLP distributable cash flow and EBITDA are non-GAAP supplemental financial measures that management and external users of our consolidated financial statements, such as industry analysts, investors, lenders and rating agencies, may use to assess our operating performance as compared to other publicly traded partnerships, our ability to incur and service debt and fund capital expenditures and the viability of acquisitions and other capital expenditure projects and the returns on investment of various investment opportunities. Reconciliations of MLP distributable cash flow to net income and to net cash provided by operating activities and of EBITDA to net income, income from operations and net cash provided by operating activities can be found in the financial schedules at the end of this press release.

Westlake Chemical Partners LP

Westlake Chemical Partners is a limited partnership formed by Westlake Corporation to operate, acquire and develop ethylene production facilities and other qualified assets. Headquartered in Houston, the Partnership owns a 22.8% interest in Westlake Chemical OpCo LP. Westlake Chemical OpCo LP's assets consist of three ethylene production facilities in Calvert City, Kentucky, and Lake Charles, Louisiana and an ethylene pipeline. For more information about Westlake Chemical Partners LP, please visit http://www.wlkpartners.com.

Westlake Chemical Partners LP Conference Call Information:

A conference call to discuss Westlake Chemical Partners' second quarter 2023 results will be held Thursday, August 3, 2023 at 1:00 PM Eastern Time (12:00 PM Central Time). To access the conference call, it is necessary to pre-register at https://register.vevent.com/register/BIb635b9f0d11a495fb699666f55842f0b. Once registered, you will receive a phone number and unique PIN number.

A replay of the conference call will be available beginning two hours after its conclusion. The conference call and replay will be available via webcast at https://edge.media-server.com/mmc/p/8hay9rav.

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